A single-channel DC motor controller with an I2C interface. It is powered from 1.8 V to 22 V and can deliver up to 1.8 A of current. Board with soldered connectors. Pololu 5074

Step-Up/Step-Down DC-DC converter module. It has an input voltage of 2.8 to 22 V, an output voltage of 12 V and a maximum input of 2.5 A to 3.5 A. Pololu 4984

Uninterruptible power supply (UPS) module allowing continued operation and safe shutdown after a power failure. It provides an output voltage of 5 V and allows the reading of battery operating parameters via the I2C bus. Waveshare UPS Module Mini

Module with a digital distance sensor with a range of up to 10 cm. It has a digital output that goes low when an object is detected. Pololu 4052

Compact 9DOF IMU sensor with accelerometer, gyroscope and magnetometer, supporting advanced data fusion with Arm Cortex M0 processor and CEVA SH-2 software, offering I²C, SPI and UART-RVC interfaces and a wide range of functions for precise motion and orientation analysis. Adafruit 4754

32-bit ARM Cortex-M0, 24kB Flash, 1kB EEPROM, 6kB SRAM, LQFP48, NXP, RoHS

Absolute encoder module with 8421 (BCD) coding with 16 positions. Horizontal mounting. DFRobot DFR0722

The SD3031 precision real-time clock (RTC) module. It has an integrated quartz resonator, on-board SRAM and communicates via an I2C interface. DFRobot DFR0998

Module with 3-color e-Paper display with a diagonal of 2.9" and a resolution of 296x128 px. Communication via the SPI interface. Waveshare Pico-ePaper-2.9-B

An offline speech recognition module that enables recognition and interpretation of user spoken commands without access to an external pattern database. It is equipped with 121 commonly used fixed command words and the ability to learn up to 17 new customised instructions. DFRobot SEN0539-EN

The GR10-30 sensor module, which can recognise up to 12 user gestures from a distance of up to 30 cm. It supports communication via both UART and I2C interfaces. DFRobot SEN0561

Analogue current sensor module. Allows measurement of AC and DC currents up to 50 A. DFRobot SEN0098-V2

The SanDisk High Endurance microSDXC 128GB V30 Memory Card with Adapter is a rugged and reliable storage solution designed for heavy use in harsh environments, ideal for video surveillance, drones, action cameras, professional cameras and telemetry systems, offering fast data storage and high capacity

Ultrasonic distance sensor with a measuring range from 2 to 400 cm. It communicates via a standard interface (Echo, Trigger) or the I2C bus. SparkFun SEN-17777

RS-232 D-Sub (f) / D-Sub (m) cable, 2 m long. Akyga AK-CO-01

Module with OLED display, 1.3" diagonal and 64x128 px resolution. Communication via SPI or I2C interface. Waveshare Pico-OLED-1.3

LM3668SD-4550/NOPB, 1-A, High-Efficiency Dual-Mode Single-Inductor Buck-Boost DC-DC Converter, WSON-12

LCD1602 I2C Module Waveshare 30494 (blue) provides a clear two-line text display for microcontroller projects with limited available pins. With compatibility for 3.3 V and 5 V power supplies and broad support for both hobbyist and professional platforms, the module is well-suited for control panels, measurement systems, and user interfaces in embedded applications.

Quectel L20 to kompaktowy moduł GPS o wysokiej czułości śledzenia i zaawansowanej eliminacji zakłóceń, zaprojektowany do zastosowań w systemach lokalizacji, logistyce, urządzeniach IoT oraz przenośnej elektronice wymagającej precyzyjnego pozycjonowania.